Results 261 to 270 of about 112,664 (301)

Vanadium-containing mesoporous carbon and mesoporous carbon nanoparticles as catalysts for benzene hydroxylation reaction

Materials Today Communications, 2017
Abstract Highly ordered mesoporous carbon of body-centered cubic structure was synthesized by the evaporation induced self-assembly method using Pluronic F127 and phenolic resol as the template and carbon source, respectively. Vanadium species were introduced to the carbon support by both co-assembly and impregnation strategies for comparison ...
Liya Hu, Cheng Wang, Bin Yue, Xueying Chen, Heyong He   +4 more
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Self-Assembly for Mesoporous Carbon

2017
This chapter describes the self-assembly process for the mesoporous carbons (MC) prepared using soft and hard templates. Design and modification of MC mainly depends on the templates which are prepared via the self-assembly of inorganic and organic molecules. These self-assembly processes play an important role in controlling the structure, morphology,
K.S. Lakhi, M.K. Devaraju, S. Arumugam, A. Vinu   +3 more
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Molecular-Sieving Capabilities of Mesoporous Carbon Membranes

The Journal of Physical Chemistry B, 2008
The size-sieving properties of a mesoporous carbon membrane were studied via molecular permeation and cyclic voltammetry experiments. Two phenomena, simple diffusion and electrochemically aided diffusion, were investigated. Molecular diffusion through the membrane was caused by a concentration gradient across the membrane and was facilitated by ...
Chia-Hung, Hou, Xiqing, Wang, Chengdu, Liang, Sotira, Yiacoumi, Costas, Tsouris, Sheng, Dai   +5 more
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Surface chemistry of carbon-templated mesoporous aluminas

Physical Chemistry Chemical Physics, 2009
Using infrared spectroscopy, a comparative investigation was carried out of the surface properties of mesoporous aluminas prepared by the carbon templating route and of a commercial alumina PURAL SB. In the hydroxylated state the mesoporous materials bear surface OH groups terminally bonded to an octahedral Al3+ ion, which has basic properties.
Onfroy, T., Li, W., Schüth, F., Knözinger, H.   +3 more
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Ordered mesoporous carbon/α-alumina nanosheet composites

Nanoscale, 2010
Novel α-alumina crystalline nanosheets are used for the preparation of alumina-carbon composites, in which the latter component is phenolic resin-based ordered mesoporous carbon. A unique feature of these composites is perpendicular orientation of ordered mesopores of the carbon to the (001) facets of nonporous α-alumina nanosheets accompanied by ...
Joanna, Górka, Mietek, Jaroniec, Wojciech L, Suchanek   +2 more
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Aqueous dye adsorption on ordered mesoporous carbons

Journal of Colloid and Interface Science, 2007
Ordered mesoporous carbons (OMCs) with varying pore size, and microporous carbon, CFY, were synthesized using ordered mesoporous silica SBA-15 and NaY zeolite as hard templates, respectively. N(2) adsorption tests show that the synthesized OMCs possess abundant mesopores and centralized mesopore distribution.
Xun, Yuan, Shu-Ping, Zhuo, Wei, Xing, Hong-You, Cui, Xiao-Dong, Dai, Xin-Mei, Liu, Zi-Feng, Yan   +6 more
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Adsorption of alkaloids on ordered mesoporous carbon

Journal of Colloid and Interface Science, 2013
An ordered mesoporous carbon (OMC) adsorbent was synthesized, characterized, and evaluated for effective separation and purification of alkaloid compounds from aqueous solutions. The OMC adsorbent has a large BET specific surface area (1532.2m(2)/g), large pore volume (2.13cm(3)/g), and narrow pore diameter distribution with a median pore diameter of 4.
Yin, Li, Bin, Yuan, Jie, Fu, Shuguang, Deng, Xiuyang, Lu   +4 more
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Synthesis of Mesoporous Carbons Using Ordered and Disordered Mesoporous Silica Templates and Polyacrylonitrile as Carbon Precursor

The Journal of Physical Chemistry B, 2005
Mesoporous carbons were synthesized from polyacrylonitrile (PAN) using ordered and disordered mesoporous silica templates and were characterized using transmission electron microscopy (TEM), powder X-ray diffraction, nitrogen adsorption, and thermogravimetry.
Michal, Kruk, Bruno, Dufour, Ewa B, Celer, Tomasz, Kowalewski, Mietek, Jaroniec, Krzysztof, Matyjaszewski   +5 more
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Mesoporous Carbon Produced from Tri-constituent Mesoporous Carbon-silica Composite for Water Purification

2012
Highly ordered mesoporous carbon-silica nanocomposites with interpenetrating carbon and silica networks were synthesized by the evaporation-induced tri-constituent co- assembly approach. The removal of silica by concentrated NaOH solution produced mesoporous carbons, which contained not only the primary large pores, but also the secondary mesopores in ...
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Ordered mesoporous carbon particles covered with carbon nanotubes

Carbon, 2006
The preparation of carbon nanostructure, namely ordered mesoporous carbon (OMC) covered with carbon nanotubes (CNT) was described. The CNTs on the external surface of the OMC were found to form an interconnected network, which facilitates electron transport between the OMC particles. It was shown that the presence of CNTs on the external surface of OMC
Su, F., Li, X., Lv, L., Zhao, X.S.
openaire   +2 more sources